Re: NDMP TOC (was Re: TSM 5.3 new goody)

        Just a quick update on our NDMP/TSM implementation we have been
working on:

        RECAP - We were attempting to get NDMP to work with TSM, at the
qtree level (as opposed to the whole volume) and get a TOC for the
files. We had ~some~ qtrees succeed but many failed. 
        We've spent the last month with IBM and NetApp trying to figure
out who's fault it was with logs and traces.

        Resolution:
        For those of you using NDMP on NetApp servers, here is the bug
we ran into:
__________________

Bug ID 152072 
Title Tape backups are larger than expected or appear to loop in Phase
V. 
 
Description
Formatted  If a data set has more than ~4,000 ACLs, then file data may
be mistakenly 
 written out in addition to NT ACL data during Phase V (NT ACLs) of
dump. 
 Symptoms of this bug include: Data written taking up significantly more

 space than what is being dumped or dump appearing to loop in Phase V.
 
 The behavior may be seen with dumps initiated from either the filer
console 
 or NDMP.


Related Solutions   
Fixed-In Version Data ONTAP 7.0.0.1P2 
______________________

        The additional symptom that we bumped into is the inability to
create a Table of Contents for the TSM session.

        I'm kinda surprised that nobody else has stumbled across this
bug...

Ben

 
-----Original Message-----
From: bbullock 
Sent: Tuesday, March 22, 2005 10:03 AM
To: 'ADSM: Dist Stor Manager'
Subject: RE: NDMP TOC (was Re: TSM 5.3 new goody)

        Hmm, I haven't seen a good rule-of-thumb for the TOC. Perhaps
others who are using it more can address this. 

        In my limited testing, I sometimes get a TOC much larger than I
would expect on qtrees with the same approx number of files. Might it
depend on if there are ACLs for the NTFS qtrees? I'm not sure in NDMP if
that type of information is in the actual image file or in the TOC...

Ben

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Curtis Stewart
Sent: Tuesday, March 22, 2005 9:47 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: NDMP TOC (was Re: TSM 5.3 new goody)

Anyone know how to estimate the size required for a TOC? I'm looking at
NDPM for our filer, that has about 3 million files.

curtis.stewart AT lawson DOT com